The most effective way of preventing the flu in the winter is by not exposing your body to cold temperatures.

Question

Quizplus · Accepted Answer

The flu is caused by a virus, not cold temperatures. The most effective way of preventing the flu is getting vaccinated, practicing good hygiene (such as washing your hands frequently), and avoiding close contact with sick people. While cold temperatures can weaken the immune system, simply avoiding cold temperatures will not prevent the flu.

The Most Effective Way of Preventing the Flu in the Winter